Combination level and square.



-G. W. W-O LCOTT. COMBINATION LEVEL ANDSQUARE. Y APPLICATION FILED HA3.2, 1910. I I 7 v Patented 001;.25, 191-0,

' z sums-sun 1'.

ATTORNEYS 1 THE mmms PETERSW WASHINGTON, u. c

a aw. WQLGOTT. QQMBIRATIQK LEVEL AND'SQUABE.

2 SHEETS-SHEET 2.

ABELIOATIOK FILED HA3. 2, 1910.

Patented Oct.

' WITNESSES:

ATTORNEYS THE HnRRls PITERS co" wnsmmzrou, n c

GUY'WALTER WOLCOTT, 0F HEALDSBURG, CALIFORNIA.

COMBINATION LEVEL AND SQUARE.

Specification of Letters Patent.

Application filed March 2, 1910.

Patented Oct. 25, 1910. Serial No. 546,779.

To all whom it may concern:

Be it known that I, GUY WVALTER WVoL- oor'r, a citizen of the UnitedStates, and a resident of Healdsburg, in the county of Sonoma and Stateof California, have invented a new and Improved Combination Level andSquare, of which the following is a full, clear, and exact description.

This invention relates to a new and improved instrument for squaring andleveling the foundations for buildings and giving the grade line at thesame time, and also for setting out orchard trees and vines and liningthem in a perfect rectangle, and for any other operation where it isdesired to obtain the accurate alinement point, to form a perfectrectangle at a proper level.

An object of this invention is to provide a device which will be simplein construction, inexpensive to manufacture, strong, durable, simple andaccurate in its operation, and capable of perfect adjustment.

A further object of this invention is to provide a squaring and levelinginstrument wherein a plurality of sight tubes are provided, secured at adefinite angle one to the other, whereby great accuracy may be obtained,even by an uneducated operator.

These and further objects, together with the construction andcombination of parts, will be more fully described hereinafter andparticularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of ref erence indicatecorresponding parts in all the views, and in which Figure 1 is aperspective View showing my device in use; Fig. 2 is a fragmentarysectional view in elevation, on the line 22 of Fig. 5; F 3 is a verticalsection on the line 33 of Fig. 2; Fig. 4 is a horizontal section on theline 4.t of Fig. 8; Fig. 5 is a top plan view; and Fig. 6 is a side viewin elevation.

Referring more particularly to the separate parts of the device, 1indicates a base, made of any suitable form and material. Secured to thebase 1, there is provided a table 2. The means of securing the table 2to the base 1, while it may consist of any suitable adjustable means, iscomposed of a plurality of doubly-threaded adjusting through an opening9 in the base 1 and en gage any support, for the purpose of fixedlylocating the instrument on the proper point. The pin 8 may be adjustablerelative to the table 2 in any suitable manner, such as by providing arack 10 on the side thereof, which is engaged by a pinion 11 secured toand operated by a member 12. It will thus be seen that by rotating themember 12 in a clockwise direction the pin 8 can be forced into asupport when. it is desired to locate the instrument definitely; andfurther, that the pin 8 can be removed readily when it is desired toshift the instrument from the previously-mentioned position. Inasmuch asthe pin 8 is made quite sharp, the weight of the instrument is generallysulficient to offer the necessary resistance in forcing the pin into thesupport. If the support is excessively hard, additional resistance canbe obtained by pressing the hand downwardly on the instrument.

Extending upwardly from the table 2 and in alinement with the pin 8 sothat its center overlies the center of the pin 8, there is provided apivot pin 13. Adjustably mounted on the table 2 by having an openingtherein engaging the pin 13, there is provided a frame 14, which forms asupport for a sight member 15 of the instrument. The frame 14 isprevented from accidental removal from the table 2 by means of athumb-screw 16, which engages a screwthread on the pin 13. Thesupporting frame 14 is provided with a suitable guide 17, preferablycircular in form, struck from the center of the pin 13 as a center,which engages a corresponding groove 18' in the table 2, to adjust thesight member 15 to any position relative to the table 2 and the supporton which it is located. The frame 14 has a circular edge, and isprovided with an indicating mark 19, which is adapted to oooperate withan arcuate scale 20 inscribed in any suitable manner on the table 2, soas to indicate the variation from the normal position of the frame 14:relative to the table 2. hen it is not desired to use the pivotalrelation of the frame 14 with respect to the table 2, this frame can belocked to the table by means of one or more locking members 21, whichare in the form of screws or pins engaging in openings in flanges 22 and23 on the frame 1 1 and the table 2, which are adapted to be broughtinto alinement.

The sight member 15 is of rather peculiar form, in that it consists of aplurality of sight tubes 24 and 25 secured to each other at apredetermined angle and having their lines of sight crossing each otherat a point whose projection corresponds with the projection of thecenters of the pins 13 and 8. As shown in the figures, these tubes arepreferably extended at right-angles to each' other, so that the lines ofsight therethrough extend at right-angles to each other, enabling theinstrument to be used without moving, to locate two points whose linesof sight with a given point are at right-angles to each other. The tubes24 and 25 are provided with level-indicating devices 26 and 27 of anysuitable character. The sight tubes 24 and 25 may be of any charactersuitable to get a line on an object or point, and may have the usualadjustments of the eye-pieces and the objectives to give the properfocus.

The operation of the device will be readily understood when taken inconnection with the above description.

In using the device for locating the foundation of a rectangularbuilding, the instrument is set on a suitable post or stake, indicatedby the numeral 29 in Fig. 1, and the pin 8 forced down into the knownpoint located on the post 29. The instrument is then leveled up bymanipulating the screws 3 until the leveling devices 26 and 27 indicatethat the instrument is in true level. Sights are then taken through thetubes 24L and 25 in the direction of the two juxtaposed corners of thefoundation, which are represented in Fig. 1 by the posts 30 and 31.After allowing for the difference of the tubes 24, 25 above the pointlocated on the top of the post 29, the exact level and direction of thepoint on the posts 30 and 31 can be determined. The instrument is thenshifted to either of the posts 30 or 31, and a back sight taken at thepoint on the post 29, and the direction of the remaining corner of thefoundation determined by taking a sight in its direction through theother sight tube of the instruments. The exact position of this fourthcorner can then be located by taking sights from the other of of thedevice might be described, but it is believed this illustration issufficient.

\Vhile l have shown one embodiment of my invention, I do not wish to belimited to the specific details thereof, but desire to be protected invarious changes, modifications and alterations which I may make withinthe scope of the appended claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. The combination with a plurality of sight tubesextending in fixed relation with respect to each other and having theirlines of sight intersecting, of a pin connected to said sight tubeshaving its point exposed and projecting downwardly and corresponding tothe projection of the point of intersection of the lines of sight ofsaid sight tubes and adapted to be inserted in an extraneous support tolocate the position of said sight tubes.

2. The combination with a plurality of sight tubes extending in fixedrelation with respect to each other and having their lines of sightintersecting, of a pin connected to said sight tubes and having anexposed point projecting downwardly and corresponding to the projectionof the point of intersection of the lines of sight of said sight tubesand adapted to be inserted in an extraneous support to locate theposition of said sight tubes, and means for pivotally connecting saidsight tubes to said pin.

3. The combination with a table, of a frame pivotally connected to saidtable, a plurality of sight tubes connected to said frame and secured toeach other in a given fixed relation, and means for indicating therelative movement of said sight tubes with respect to said table.

4:. The combination with a table, of a frame pivotally connected to saidtable, a plurality of sight tubes connected to said frame and secured toeach other in a given fixed relation, means for indicating the relativemovement of said sight tubes with respect to said table, and means foradjusting the level of said table.

5. The combination with a base, of a table, means for adjustablysecuring said table to said base, a frame adjustably secured to saidtable, a plurality of sight tubes secured to each other in a given fixedrelation, and a pin adjustably connected to said table and adapted tolocate the position of said sight tubes.

.6. The combination with a pair of sight tubes secured at right-anglesto each other so that their lines of sight intersect each other atright-angles, a pin connected to said sight tubes, the point of whichforms the projection of the point of intersection of the positions 30and 31. Many other uses 1 said lines of sight, means for adjusting thevertical position of said sight tubes, means for indicating the level ofsaid sight tubes, means for adjusting said sight tubes horizontally, andmeans for indicating the horizontal adjustmentof said sight tubes.

7. The combination with a pair of sight tubes secured at right-angles toeach other so that their lines of sight intersect each other atright-angles, a pin connected to said sight tubes, the point of whichforms the projection of the point of intersection of said lines ofsight, means for adjusting the vertical -position of said sight tubes,means for indicating the level of said sight tubes, means for adjustingsaid sight tubes horizontally, means for indicating the hori- Zontaladjustment of said'sight tubes, and means for locking said sight tubesagainst horizontal adjustment.

8. The combination with a pair of sight tubes secured together in apermanent fiXed relation, of a common supporting member for said sighttubes, a level on each of said sight tubes, and means for adjusting thelevel of said member.

9. The combination With a base, of a table adjustably secured to saidbase, said table having an arcuate groove therein, a frame pivot-allyconnected to said table and having an arcuate tongue engaging saidarcuate groove on said table, means on said table for indicating themovement of said frame relative to said table, and a pair of sight tubessecured together in fixed relation and connected to said frame.

In testimony whereof 'I have signed my name to this specification in thepresence of two subscribing witnesses.

GUY VALTER WVOLCOTT.

Witnesses:

R. E. BAER, S. HILGERLOH.

